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Old 10th May 2006, 02:41 AM   #1
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Default CDM1 MkII gurus - need your help!

Hi all. I have a Proceed PDT3 that uses the CDM1.2 transport. It has only recently begun to show an occasional problem. Sometimes when the drawer closes after a disk has been loaded, I will hear a sort of click and the disk will not have initialized (display reads all zeros like there's no disk). The sound is almost like some mechanical part was supposed to "drop into place" but did not, and the resultant disk initialization either doesn't occur or did not complete successfully. Opening and reclosing the drawer (so far) has always fixed this problem. It does not happen often, but is obviously something that should not be happening at all. There is no problem with the playing of the disk once initialized. I'm desperate to get some advice on this, especially if it's something that might be able to be fixed short of trying to track down a NOS CDM1.2. There aren't many left, and a NOS unit was running big money the last time I heard.
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Old 10th May 2006, 02:45 AM   #2
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If your unit has rubber belts sounds to me as though they're slipping, and you need new ones, a Marantz I had did just that and a new belt kit (usually 4) fixed the problem.

Cheers George
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Old 10th May 2006, 02:49 AM   #3
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I'll admit I haven't yet taken off the cover ( ) so I don't know if this CDM1.2 uses belts. Where did you track down the belt kit for yours?
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Old 10th May 2006, 04:06 AM   #4
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Marantz, yours could be based on one of their models or Phillips, that's the homework you'll have to do, if Proceed is still around try them.

Cheers George
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Old 11th May 2006, 11:15 PM   #5
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Well, I found a source for a NOS CDM1 Mk.II transport, but the guy wants over $500 for it. Can anyone tell me if this price range is fair?

Also, by any chance does anyone have a service manual or installation manual for this transport mechanism?
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Old 12th May 2006, 03:50 AM   #6
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Default Crazy price!!!!

Before you even consider buying a new CDM1mkii - please make sure that your's is broken.

If it is still playing the disc correctly once it has correctly read the TOC - chances are the laser is still ok.

To me, it seems like the CD is not being clamped properly every time. I would suggest that you open the CD player, raise the clamping michanism, remove the clamp disc, clean it, inspect it for wear, lubricate it with a plastic safe grease (silicone), reinstall it and try again. Get hold of any Philips or Marantz service manual with CDM2 or CDM4 and you will see what I am talking about. I can send you one if you like.

While you are at it, you might also check that the tray/drawer is moving in and out smoothly and that the rubber belt is ok. You can also lubricate the guides for the tray.

This should help ensure that the CD is being physically loaded properly each time. If you still have problems - then consider cleaning the lens of the laser. Do a search on that and you will find lots of info. After that - you could start looking at the power supply to the CDM and as a last resort - you could replace the laser with one from a CDM2 or CDM4. Also search on repairing CDM2 and CDM4 - they are very similar to your CDM1mkii.

There is really no need to spend $500 on a replacement - but it would be a good idea to get a used CDM2 or 4 for spare parts. The cheapest way is to buy a used CD player with CDM4/19 keep it for a laser transplant.

NB:- Please make sure you work ESD safe!!!
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Old 12th May 2006, 07:13 AM   #7
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Default Re: Crazy price!!!!

Quote:
Originally posted by tonyptony
I'll admit I haven't yet taken off the cover ..........
Take the lid off !

Quote:
Originally posted by Fin
Before you even consider buying a new CDM1mkii - please make sure that your's is broken.

If it is still playing the disc correctly once it has correctly read the TOC - chances are the laser is still ok.


There is really no need to spend $500 on a replacement
Remove the drawer front so the mechanism can move freely.
I think that the drawer is simply not quite closing.
Remove old grease and clean the mechanism [remove it from the machine.]
regrease carefully and sparingly - DO NOT OVERGREASE !

Carefully clean the cdm and laser while it is exposed - no need to remove.

I have had this problem on a CD104 before .

Andy
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Old 12th May 2006, 07:44 PM   #8
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Default Re: Crazy price!!!!

Quote:
Originally posted by Fin
There is really no need to spend $500 on a replacement - but it would be a good idea to get a used CDM2 or 4 for spare parts. The cheapest way is to buy a used CD player with CDM4/19 keep it for a laser transplant.
Yeah, honestly I was thinking that - while it might be nice to have a neat, NOS MkII unit, my PDT3 whole is maybe worth $500 now. That's a lot of money for a piece part when you look at it that way.

I've heard that the lasers used in the CDM1 MkII were, unlike the CDM4/19, tested and selected units. Any idea if there's any truth to that?

Thanks you both, Fin and Andy. I will take a crack at checking things out this weekend!
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Old 29th August 2006, 12:37 AM   #9
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Default Proceed problems too...

I have a PCD2 Proceed CD Player that has been on the fritz for a long time. It got to the point where I shelved it in 2004, and my large CD collection hasn't been enjoyed properly since.

I recently contacted Proceed about repairs, and was shocked when they informed me that they would only accept it for repair with a pre-authorization of, get ready- $950!!! for a player that listed for $2.2K when I bought it new in 1993. Yeah, right, sure... Harman Ba****ds...

Beginning in 2003, the following symptoms began/ developed over a period of months:

1: Occasionally stops and locks up in the middle of normal operation. Corrected by turning off front and back switches or removing AC power cord for a period of time.

2: Sudden "static" pops and crackles. Over months, this developed into a sporadic attack of "White Noise" crashing at full output. This would happen after using player for an hour or three. Remedied (or so it seemed) by turning front switch off (leaving back switch on) and letting it cool off, usually overnight. It soon got to where it did this rather quickly, at which time I stopped using the player.

This was about two years ago. Recently, after getting tired of the poor performance of Red Book Audio CD's on my Sony SACD player, I pulled it out to give it a look myself. Now, it does the same thing and more:

3: When the tray closes, a loud "rattle" noise develops, and followed by the "error" light flashing after about 10 seconds. Sometimes the player works fine for awhile first, then reverts to this activity.

4: Disc loads, but no TOC read, followed by "error" light blinking after about 10 seconds.

My CD Player was the display model at Audio Concepts, and I bought it when the PCD3's came out. It came with a clear acrylic cover on it in addition to the metal cover; I left the clear cover on it. I recall noticing the reverse spinning disc at load time once or twice before, but it would only do it for a few seconds after loading the disc, then it would stop and spin up in the right direction of rotation.

Last weekend I took the cover off to investigate further. Removed all cables and coard connectors scrubbed the contacts, and give them a treatment of Cramolin. Cleaned and lubed everything on the transport.

Fired it up, and it ran fine -for about three hours. No noise, no flaws in reproduction, until... the next disc was loaded. SOS on the transport again. Argghh... turned off a minute, an hour, a day, until today -still continuously spinning spindle , no TOC display, followed by "error".

I discovered that when it starts misbehaving like this, the spindle is turning at full speed the entire time the front or even the rear power switch is on! The "rattle" was caused by the CD fluttering around on the spinning spindle -it was trying to fly off-center before the clamp had a chance to clamp it in place. Even when I "help" it clamp and it spins up without rattling up, it still gives the same "error" light blinking and the display never reads anything but zeroes.

I can't decide whether or not the transport control Digital output board should be looked at, or if it is a problem with the transport mechanism itself. And I certainly won't give Harman an open line of credit for $950 to have them swap transports and boards out with new ones. Any help or suggestions would be appreciated!
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Old 30th August 2006, 01:22 AM   #10
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I have a meitner cd-d transport and a micromega duo transport. The two use the cdm1 mkII.

I really like my cd-d to a point that I'm not able to find another transport to replace it.

The problem you are having is the begining of the end of the laser. I had this problem for over 6 month and I have been able to extend is life by reajusting the laser.

The click you hear is the head not able to have a good reading of the toc from time to time. I know this sound

I would not suggest investing 500$ on a used mecanics since it's too much of a guess to take. The seller probably got it out of a arcam 170 or other players using this mecanics while not knowing how many hours left on it and asking megabucks from you.

Maybe an adjustment could give you another year out of the laser unit.

I'm actualy looking for a replacement and are tempted by the cdpro2m kits.
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